- ko-
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Stem of demonstrative pronoun meaning “this.” Oldest form *k̑o-, becoming *ko- in centum languages.Derivatives include he1, et cetera, and behind.I. Variant form *ki-.1.a. he1, from Old English hē, he;II. Variant form *ke-.1. Preposed in *ke-etero- (*e-tero-, a second time, again; see i-). et cetera, from Latin cēterus (neuter plural cētera), the other part, that which remains.III.3. hinder1, hindrance, from Old English hindrian, to check, hinder, from Germanic derivative verb *hindrōn, to keep back. 1-3 all from Germanic root *hind-, behind, attributed by some to this root (but more likely of obscure origin).[Pokorny 1. ko- 609.]
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Universalium. 2010.